Box-cover opener.



F. O. LIDHOLM.

BOX COVER OPENER.

APPLICATION FILED DBO. 6, 1912.

1,084,093, Patented Jan. 13, 1914.

Unrrn is FRANQ 0. LIDHOLM, OF CHICAGO, ILLINOIS.

BOX-COVER OPENER.

Application filed December 6, 1912.

specification of Letters Patent.

Patented Jan. 13,1914.

Serial No. 735,214. r I

To all whom it may concern:

Be it known that I, FRANS O. LnnioLM, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements inBox-Cove r @pen ers, of which the following is a specification.

My invention relates to means for loosening tightly fitting covers and has particular reference to blacking box covers which are usually fitted tightly in order to prevent a too rapid drying of the contentsl The object of my invention is to improve upon the various forms of cams and levers heretofore provided for this purpose by pro-.

viding a construction which reduces the number of parts required for the lever-type of opener which forms the subject of my invention.

Another object is to provide a positively engaging lever which shall not miss its engagement, or slip, or depend upon a closely fitting pivot joint for dependable operation. And my invention further conslsts 1n the various details of construction and advantages hereinafterdescribed in detail, illustrated in the accompanying drawing and incorporated in the appended claims.

In the drawing-Figure 1 is a perspective view of a blacking box and cover equipped with my improvement. Fig. 2 is an enlarged section of the box and cover showing in elevation the cover-opening or loosening mechanism. Fig. 3 is a section taken on the line 33 of Fig. 2. Fig. 4c is a perspective view of the lever alone. Fig. 5 is a perspective View of a modified form of lever.

In the several views 2 represents the box provided with the usual bead or cover stop 2, and 3 is the cover. In the present invention the lever is mounted on the cover, no operation being made to change the form of the box. In the rim or flange of the cover is cut out an opening 4, a portion of the material struck out being formed into ears or lugs 5 and 6 which are thus made integral portions of the rim or flange of the cover and may be formed at the same operation that produces the opening 4: A lever of the construction shown in Fig. lis formed with a pair of cars 7 and 8 which are mounted on a pivot 9 supported by the ears 5 and 6.

The upper end 10 of the lever is arranged to project above the edge of the box 2, as shown in Fig. 3, and to engage said edge to pry loose the cover. The lower end of wardly when the cover is removed so as to bring its portion 11 in the way when the cover is to be replaced on the box.

In Fig. 5 a modification is shown wherein the ears 7 and 8 are provided with stops 13 and 14 which limit the upward swing of the lever and prevents it when the cover is removed from standing up against the side of the cover flange and make it necessary to lower the lever by hand. By thus limiting the upward swing of the lever it will always drop back by gravity to its normal position and not require adjustment before the lid or cover is replaced as in many forms of blacking box openin devices. As will be noticed, particularly Iiy reference to Fig. 3, there is no chance for the lever to miss its engagement or slip, as when the bead 2 is the part engaged by lever or cam, nor does the present construction and arrangement require nicety of adjustment of the parts in order to obviate failure of engagement, as when, for instance, the edge of the cover flange or rim is the part to be engaged.

Having thus described my invention, I claim as new and desire to secure by Letters Patent.

1. The combination with a blacking box and the cover therefor having a flange engaging the periphery of said box, of a lever interposed between said flange and periphery, said lever having a load-end extending above the upper edge of said box and a power-end extending below the said flange, bearing-lugs which are integral struck out portions of said flange, a pocket in said flange to receive said load-end, and stops on said lever limiting the upward movement of its power-end to substantially a horizontal position.

2. The combination with a box of the class described and a flanged cover therefor, said flange engaging a vertical side of said box and provided with a cut out portion, lugs at the ends of said out portion, said lugs being integral portions struck out of said flange, an integral lever having ears In testirnony whereof I have hereunto set thereon, a piv0t pin mounted on said lugs my hand 1n the presence of two subscribing 10 and engaging said ears, and a depression to witnesses.

receive the load-end of said lever said depression formed in the inner side of said FRANS LIDHOLM' flange and arranged above the upper edge of W1tnesses:

said box when said cover is fitted onto said O. A. LEmHoLM, box. 7 J. W. BUnsrRoM. 

